45404213 has 2 divisors, whose sum is σ = 45404214. Its totient is φ = 45404212.

The previous prime is 45404123. The next prime is 45404221. The reversal of 45404213 is 31240454.

Together with previous prime (45404123) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31281649 + 14122564 = 5593^2 + 3758^2 .

It is a cyclic number.

It is not a de Polignac number, because 45404213 - 2¹⁴ = 45387829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45404113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22702106 + 22702107.

It is an arithmetic number, because the mean of its divisors is an integer number (22702107).

Almost surely, 2^45404213 is an apocalyptic number.

It is an amenable number.

45404213 is a deficient number, since it is larger than the sum of its proper divisors (1).

45404213 is an equidigital number, since it uses as much as digits as its factorization.

45404213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 45404213 is about 6738.2648359945. The cubic root of 45404213 is about 356.7511519467.

Adding to 45404213 its reverse (31240454), we get a palindrome (76644667).

The spelling of 45404213 in words is "forty-five million, four hundred four thousand, two hundred thirteen".